Home / 28,747.28-43,112.28-7,972.40

Finding the Fourth Proportional to 28,747.28, 43,112.28 and 7,972.40

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Solution

The fourth proportional to 28,747.28, 43,112.28 and 7,972.40 is: 11,956.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,747.28 : 43,112.28 = 7,972.40 : x
  2. Step 2: Convert to fraction form
    28,747.28/43,112.28 = 7,972.40/x
  3. Step 3: Cross multiply
    28,747.28x = 43,112.28 × 7,972.40
  4. Step 4: Simplify right side
    28,747.28x = 343,708,341.07
  5. Step 5: Solve for x
    x = 343,708,341.07/28,747.28
  6. Step 6: Final answer
    x = 11,956.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.